Machine for winding yarn and the like



Aug. 30, 1938. c. MARSDEN MACHINEvFOR WINDING YARN AND'THE LIKE Filed May 25, 193e 2 Sheets-Sheet 1 ...In :z E U M@ wwl Nw W m KMS III. lll mw Nl m M 4.. w Nw m s NM .w l m Ng W R o 1 .M Wl. l b... V. I C mma/47 6s" huw' 4 N lpj L- .iE. Em A il @w Ilm IWL@ ,awww Swx U f QM l "Jnnm Nvvvvkvvvvvwy EM U1/ L ATTORNEY Allgl 30, 1938. L C MARSDEN 2,128,787

MACHINE FOR WIIINDING YARN AND THE LIKE u Filed May 25, 195e z'sheets-sneet 2 NX/'ENTOR Q CHARLES MARSDEN By l' ATTORNEY Patented Aug. 30, 193s l 2,128,787 MACHINE Fon 4wiNniNd YARN ANn` THE A. Y LIKE Charles Marsdem'Ahmedabad; Bombay, British i 'India Application May 25, 1936, serial. N0. 81,742 In Great Britain June 18, 1935 2 Claims.

This invention is for improvements in or relating to machines for` winding. yarn and the like in conical chases. One object of the invention is toprovide an eflicient transmission of the drive (Cl. W12-31) prises a main frame Ill Vhaving bearings II for a tubular clutch-member I2 and a spindle I3 which lies within it. The tube I2 carries a grooved wheel I4 which abuts against a spring I5, the l '5l to the'traversingmeans. Another object is to ine other end of which engages a collar I6 affixed Vto i5( crease the speed of operation attainable in such the spindle I3. The worm I1 forms part of a tube machinesby reducing frictional losses and reducwhich is also aliixed to the spindle I3. f ing the number of moving parts required. l Rotatably mounted on the left-hand end of Y According tothe present invention there is prothe spindle I3 is a pulley I9 having a conical face vided Vamachine which comprises the combina to cooperate with a clutch-member 20 formed inw tion with a winding spindle, a worm mounted on tegrally with the tube I2. The outer end of the the winding spindle to rotate with the latter, a spindle I3 is supported in a bracket 2|. thread-guide between which and kthe winding The right-hand end of the tube I2 is formed A spindle relativereciprocation takes place to travwith dogs 22 adapted to engage with corresponderse the yarn or'thelike longitudinally of the ing slots in the collar I6 whereby a driving conwindin'g spindle, and means for effecting av stepby-step relative displacement between the threadguideandthe winding spindle longitudinally of th'elatter in accordance with the growth of the package, of a worm-wheel which engages `andis driven by the said worm and is itself formed with a cam-track serving to effect the said relative reciprocation between the thread-guide and Ythe winding spindle. Thus, in accordance with the invention a single member serves both as the gear by which the cam is driven and as the cam itself. This has the advantages of reducing the number and size of the bearings required and reducing the number of moving parts needed, with the result that high speeds of operation are attainable. Preferably, the saicl cam-track is afforded by a double-sided groove Yformeel in a face of the worm-wheel.

. In one construction according to the invention there is a bellcrank lever whereof one arm carries a follower engaging the said cam-track and the other arm is coupled to a reciprocating member which, when operated by the arm, causes the said relative reciprocation to take place between the thread-guide and the winding spindle.

A preferred form of winding machine in ac.- cordance. with the invention will now be described by way of example only and with reference to the accompanying drawings.

In the drawings,

Figures la. and lb show the winding machine in plan View with certain parts omitted;

Figure 2 is an elevation partly in section of the parts shown in Figure la, and

Figure 3 is a cross-sectional View of the wormwheel and its mounting taken on the line 3 3 of Figure la.

Like reference numerals indicate like parts throughout the drawings.

As shown in the drawings, the machine comnection is established between the' tube I2 and thecollar I6 so that when the clutch-member 20 is in frictional engagement with thepulley I9 rotation of the pulley drives the spindle I3. The right-hand end of the 1 spindle carries spring-fingers 23 to engage the end ,24 of a cophold-er, the other end 25 of the cop-holder being supported by a centering spindle 25 mounted in bearings in a plunger 27 pressedtowards the cop by means of a spring 28 and slidable in a guide 29. The plunger 21 terminates in a knob 36 whereby it may be retracted manually.

v The worm I'I (see Figures 2' and 3) engages and drives a worm-wheel 3| which rotates on an anti-friction bearing 86 carriedv on a post 8| secured to the frame ID by a bolt 82. ,The bearing 80 is mounted on a reduced portion 83 of the post 8| and is secured in place by a nut84. between which and the inner race of the bearing 80 there is interposed a spacer 85 and` the loopV of a spring anchorage 86. The latter has secured' to it one end of a spring 69 associated with the stop-motion of the machine. The worm-wheel 3 has cut in its face a double-sided cam-track comprising two portions 32 and 33. gaged by a follower 34 on the shorter arm 35 of a bell crank lever 35,36 pivoted` to the frame at 3l. 'I'he arm 36 is pivoted to a link 33-which isv in turn pivoted at 39 to a traverse-rod 46 slidable in a tubular guide 4| and in a bush 42. It will. be seen fromreference to Figure 1a. that the bellcrank lever 35, 36 is so mounted that its two arms and its pivot are, as viewed in plan, mounted between the winding spindle I3 and the traverserod 40.

The traverse-rod 40 carries a screwthreaded extension 43 on which a progression wheel 58 having a hub 59 is mounted. The hub 59 is straddled by astirrup 6| which is also mounted on the rod 43 and carries the thread-guide shown Vat 62.

The track is en- 4 The screwthreaded rod 43 is coupled to the traverse-rod 40 by a pin 48 engaging in a slot 41 in a former bar 46 screwed to the end of the traverserod and secured in place by a lock-nut 45. The former bar 46 ts in a slot in the screwthreaded rod 43 and is adapted to engage the interior of the hub 59 of the progression Wheel 58 at the commencement of the winding operation to build the heel on the cop. The outer end of the screwthreaded rod 43 is mounted in a universal joint 54 in a sleeve 55 attached to a bracket 51 secured to the main frame I6.

At the commencement of the winding operation the progression wheel 58 is moved to the left as seen in Figure 1b and the interior of its hub engages the former bar 46 as described in my copending application Serial No. 33,187, filed th July, 1935. This causes the rod 43 to be rocked about the universal joint 54 to bring the periph'- ery of the progression wheel 58 adjacent to the yarn support. As the first few layers of yarn are wound on the yarn support the progression wheel is rotated by contact therewith and moved progressively to the right as viewed in Figure lb. This permits the rod 43 to move in steps back to the position shown in Figure lb as the heel of the cop is formed. Thereafter the yarn is wound in conical chases to produce a cylindrical or approximately cylindrical package with tapered ends.

In the machine shown in the drawings the two parts 32, 33 of the traverse-cam groove are of different lengths and are somewhat steeper than an archimedean spiral as described in my copending application Serial No. 81,741 of even date herewith. Also the former bar 46 hasl its profile slightly concave.

When the cop has been fully built thelprogression wheel 58 operates suitable devices to release the cone 20 from the pulley i9 and thereby interrupt the drive.

In the method of operation described above the former bar 46 and screwthreaded rod 43 are initially set so that when the heel has been formed the rod 43 will lie coaxial with the traverse-rod 48. ently arranged to give any desired shapeY to the heel of the cop. The parts may also be arranged to wind on to a pirn having a preformed conical end on which the yarn is laid in conical chases. For this purpose the spindle I3 may be movable to the right as seen in Figures la and lb relatively to the tube l2, collar I6 and worm I1, this being permitted by the release of appropriate grub-screws which are subsequently retightened. Such movement of the winding spindle is made with the object Yof commencing the winding operation with the hub 59- of the progression wheel out of co-operation with the former'bar 46. Alternatively, for winding on to a cone-ended pirn it may be feasible in some circumstances to turn the former bar about the traverse-rod axis to a sufficient angular extent to prevent it from moving the progression wheel 58 towards the winding spindle. In this case it will be unnecessary to move the spindle I3.

However, the parts may be differ- By having the worm-wheel 3| and traverse rod formed as a single member an efficient drive is secured. The number or length of the bearings is reduced,V as well as the number' of moving parts.l There is also the advantage that the thrust from the worm I1 for operating the traverse rod 4D is transmitted through the material of the wheel itself and not through its'bearing. The grooved form of cam also provides for positive control of the traverse rod in both directions of its movement. The general result of all these advantages is that the machine can be operated at high speeds such as have not previously been attained in the class of winding machines with which the invention is concerned.

It is to be understood that the invention is not restricted to the precise constructional details shown in the drawings.

I claim:

1. In a machine for winding strand material in conical chases, the combination comprising a winding spindle, a worm mounted on the winding spindle to rotate with the latter, a traverse-rod, a thread-guide adapted to be reciprocated by the traverse-rod to traverse the strand material longitudinally of the winding spindle, a progression wheel carried by the traverse-rod for effecting a step-by-step relative displacement between the thread-guide and the Winding spindle longitudinally of the latter in accordance with the growth of the package, a Worm wheel which engages and is driven by the said worm, a slow-speed traverse-cam formed directly in a face of the worm wheel itself, a bell-crank lever pivoted to rock about an axis parallel to the axis of the worm wheel, a follower mounted on one arm of the bellcrank lever and engaging the cam-track of the worm Wheel, and means coupling the other arn of the bellcrank lever to the said traversero 2. In a machine for winding strand material in conical chases, the combination comprising a winding spindle, arworm'mounted on the winding spindle to rotate with the latter, a' traverse-rod, a thread-guide adapted to be reciprocated by the traverse-rod to traverse the strand material longitudinally of the winding spindle, a progression wheel carried by the traverse-rod for effecting a step-by-step relative displacement between the thread-guide andthe winding spindle longitudinally ofthe latter in accordance with the growth of the package, a worm wheel which engages and is driven by the said worm and is'itself formed with a cam-track for effecting a close-wind traverse, a bellcrank lever having its arms and pivot lying, as viewed in plan, between the said trav- 'erse-rod and the winding spindle, a pivotal 

